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Patented Oct. 5, 1886.

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NITED STATES PATENT Orr/ics.

FRANCIS THREM, OF CINCINNATI, OHIO.

BUNG.

SPECIFICATION forming part of Letters `Patent: No. 350,402, dated October 5, 1886.

Application filed August 23, 1886. Serial No. 211,623.

Tor all whom it may concern.-

Be it known that I, FnANcIsTHREM, a citizen of the United States, residing at Cincinnati, in the county of Hamilton, State of Ollio, haveinvcnted certain new and useful Improvements in Bungs, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention consists in a wooden bung constructed in such a manner as to permit the ready insertion therein either of a large or small air-vent instrument, the improvement being susceptible of a number of changes or modifications, as hereinafter more fully described.

In the annexed drawings, Figurelis a plan of the upper end of my preferred form of bung. Fig. 2 is a plan of the lower end thereof. Fig. 3 is an axial section of said bung. Figs. 4, 5, 6, and 7 are similar sections-of four modifioations of my invention.

A represents an ordinary wooden bung, the upper end of which has an annular incision, B, made therein, which cut may be carried down as far as desired.

C is an annular incision in the lower end of the bung, and extending up into the same a sufficient distance. This incision C is preferably concentric with the 'cut B, but of somewhat greater diameter than the latter. Furthermore, the cylindrical plug D, surrounded by the incision B, is either compressed or cut down so as to bring its top below the upper surface of the bung proper, in order that said plug may not be struck by the mallet used in driving said bung into a key or barrel; but the cylindrical plug E, surrounded by the lower incision, C, need not be reduced in length.

The bung as above described is known to be old, and in using the same the heel of the air-vent is placed upon the plug D, and a moderate blow against the upper end of the instrument tears apart the thin web F remaining between the incisions B C, and thus permits the insertion of said vent. Itis evident, however, that the air-vent heel must be practically of the same diameter as the upper incision, B, or a tight joint will not be afforded. It is also apparent that a Vent of less diameter than said incisionjcould not be used, and, as a number of these instruments are comparatively small, some provision is needed for their in- (No model.)

sertion in the bung. I accordingly make a bore, d, in the upper plug, D, and a similar bore, e, in the lower plug, E, and separate them by a thin web, H, which provision of said devices d e H allows a comparatively small airvent to be used. Vith such a vent it is necessary only to employ suflicient force to rupture the web H in the act of inserting the instrument, the tubular stem or shank of which occupies the now communicating bores d and e; hence, it is apparent a bung constructed in this manner will admit twodiiferent-sized air- Vents, thereby greatly increasing the utility of the device.

Having thus suggested the idea of a bung capable of admitting different-sized air-vents, modications of the invention can be devised with very little trouble. One obvious change is seen in Fig. 4:, where a single continuous bore, I, is made in the bung, which bore begins at the upper end of the plug D and terminates at bottom with the web H; but in Fig. 5 a continuous bore, J, is made from the bottom of the bung, and is carried up almost tothe top of the same, being closed by the web H. Furthermore, the upper end of plug D may be countersunk, as at h, to indicate the exact place where the air-vent heel is to be applied for the purpose of breaking through the web H, and thereby traversing the aforesaid bore J. Y

Fig. 6 shows a bung having an upper annular incision, B, and plug D, which latter has a bore, K, open at its upper end, but closed at bottom by the web H.

Another modication of the invention is seen in Fig. 7, where the bung has alowcr an-v nular incision, C, and at top a chamber. L,

from the bottom of which latter proceeds a bore, M, closed by the web H.

VIt will be noticed that the bungs seen in Figs. 4, 5, 6, and 7 are similar to the device shown inFig. 3, inasmuch as they afford facilities for the insertion either of a large or small air-vent of any construction.

I claim as my invention-m l. A bung having an annular incision eX- tending partially through it to afford a plug,

which latter is traversed by a bore .closed at one end with a web, whereby said bung admits two different-sized airvents, substantially as herein described.

2. A bung` having upper and lowei` annular and closed at top by :t web, the upper Surface incisions extending partially through it to :tfof the latter being` countersunk, for the purford a pair of plugs, each of which is traversed pose described.

l by a bore separated by :t web, whereby said In testimony whereof I affix my signature 5 bung admits two di fferent-sized nir-vents, subin presence of two witnesses. 1

sta-ntiully as herein described. -i f 1 3. A bung having upper and lower annular FRANC FHRIJM incisions extending` partiell y through it to all Wtnesses: ford a pair of plugs, traversed by :t single JAMES I-I. LAYMAN, 1o bore proceeding from the bottom ol' said bung A. J. THREM. i 

